A vast country with immense economic resources, the Democratic Republic of Congo (DR Congo) has been at the centre of what could be termed Africa's world war.
This has left it in the grip of a humanitarian crisis.
The five-year conflict pitted government forces, supported by Angola, Namibia and Zimbabwe, against rebels backed by Uganda and Rwanda. Despite a peace deal and the formation of a transitional government in 2003, the threat of civil war remains.
The war claimed an estimated three million lives, either as a direct result of fighting or because of disease and malnutrition. It has been called possibly the worst emergency to unfold in Africa in recent decades.
The history of DR Congo has been one of civil war and corruption.
After independence in 1960, the country immediately faced an army mutiny and an attempt at secession by its mineral-rich province of Katanga.
A year later, its prime minister, Patrice Lumumba, was seized and killed by troops loyal to army chief Joseph Mobutu.
In 1965 Mobutu seized power, later renaming the country Zaire and himself Mobutu Sese Seko. He turned Zaire into a springboard for operations against Soviet-backed Angola and thereby ensured US backing. But he also made Zaire synonymous with corruption.
After the Cold War, Zaire ceased to be of interest to the US. Thus, when in 1997 neighbouring Rwanda invaded it to flush out extremist Hutu militias, it gave a boost to the anti-Mobutu rebels, who quickly captured the capital, Kinshasa, installed Laurent Kabila as president and renamed the country DR Congo.
Nonetheless, DR Congo's troubles continued. A rift between Mr Kabila and his former allies sparked a new rebellion, backed by Rwanda and Uganda. Angola, Namibia and Zimbabwe took Kabila's side, turning the country into a vast battleground.
Despite coup attempts and sporadic violence a fragile peace has held since the formal end of the war. But the Kinshasa government has no control over large parts of the country and tension remains high in the east.
Moreover, the lot of DR Congo's citizens is little improved. The Crisis Group, a Brussels-based think-tank, said in 2005 that 1,000 people were dying every day from war-related causes, including disease, hunger and violence.
